PLANETARY GEAR DEVICE AND DRIVE DEVICE WITH THE SAME

摘要

A second projection (22a) of a front carrier plate (22) is formed to have a greater width in the circumferential direction than a first projection (21a) of a rear carrier plate (21). A connection section (38) between an annular gear (25) and an outer edge (22c) of the front carrier plate (22) can be exposed as viewed from X1 direction, and the second projection (22a) and the annular gear (25) can be welded at the connection section (38) from the X1 direction in the axial direction. This enables welding between a first recess (21d) of the rear carrier plate (21) and a carrier bridge (23) and welding between the outer edge (22c) of the front carrier plate (22) and the annular gear (25) to be made from the same direction. As a result, a process for inverting a carrier and an input shaft (15) can be eliminated.